EM TEST
UCS 500 Series
Operating Manual
V 5.40
84 / 99
13.6. Test Setup
Setup
The TSurge6.1 must be placed on the top of the
UCS 500N7 generator.
Cabling
1.
Earth cable
UCS500N7
– TSurge7
2.
HV
and
COM
cable UCS500N7
– TSurge7
3.
Charging cables
+
/
-
UCS500N7
– TSurge7
4.
Control cable
CTRL
UCS500N7
– TSurge7
Test Setup UCS500N7 and TSurge7
13.7. Test pulses TSurge Modules
13.7.1.
Waveshape Definitions according IEC 61000-4-5 Ed 3.0
Definition of Voltage Front Time
The voltage front time is calculated by measuring the duration between 30% and 90% (tr) of the maximum pulse
amplitude and multiplying that value by 1.67
Tf
= tr
30%-90%
x 1.67
Definition of Current Front Time
The current front time is calculated by measuring the duration between 10% and 90% (tr) of the maximum pulse
amplitude and multiplying that value by 1.25
Tf
= tr
10%-90%
x 1.25
Definition of Decay Time
The decay time is calculated by measuring the time from the initial rise of the waveform to the point where it
decays to 50% of the maximum value. Because the time of the initial rise is difficult to measure the decay time
can be calculated by adding the time between 50% of the amplitude of rising to 50% of the amplitude of decaying
and 50% of the front time as defined before.
Td
= td
50%-50%
Voltage impulse TSurge
Current impulse TSurge
